Multiple head and valve-housing



APPLICATION FILED MAR- l9. I919.

Patented Apr. 12, 1921.

3 SHEETSSHEET 1.

P. W. MURPHY.

MULTIPLE HEAD AND VALVE HOUSING.

APPLICATION HLED MAR. 19, 1919.

1,374,315. Patented Apr. 12, 19 21.

3 SHEETS-SHEET 2.

P. W.MURPHY.

MULTIPLE HEAD AND-VALVE uousme.

Patented Apr. 12, 1921.

- 3 SHEETS-SHEET 3- APPLICATION FILED MAR. 191 1919.

entries stares PATENT OFFICE.

COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF MICHIGAN.

MULTIPLE HEAD AND VALVE-HOUSING.

Application filed. March 19, 1919.

T 0 all whom it may concern.

Be it known that I, Pn'rnn W. MURPHY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Multiple Heads and Valve-Housings, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specifica tion.

My invention relates to internal combus tion engines of the type wherein a plurality of cylinders are disposed around a central shaft in axial alinement therewith and having pistons connected with a main shaft cam so as to effect an inter-rotation of the shaft and cylinders.

My invention is more particularly directed to in'iprm'einents in a structure of this character, one of the features residing in a housing structurefor inelosing the cam mechanism. Another feature of my invention is in the provision of an improved intake manifold which is disposed outside the valve gear at one end with ducts extending inwardly between the valve mechanism to the intake ports and the intake valves. These various improvements will be more particularly pointed out in the accompanying specification and appending claims.

For a better understanding of my invention reference is to be had to the accompanying drawings in which- Figure l is an elevation in section of the left end of an engine embodying my invention;

Fig. 2 is an elevation of the right end of the engine, Figs. 1 and 2 to be joined at the dot and dash line to illustrate the complete engine of opposed cylinders; and

Fig. 3 is an end view of the portion of the engine shown in Fig. 1.

Referring to the drawings, a set of cylinders 1 are disposed in a circular ring around a main shaft 2 in opposition to another set. of cylinders 3, the cylinders of the sets being in axial alinement. A cam 4 has a. cam track 5 on its periphery which is engaged by the rollers 6 of cam slides 7, each connecting the opposed stems 8 of the pistons 9 of corresponding pairs of cylinders in the sets. The form of cam and type of slide is Specification of Letters Patent.

Patented Apr. 12, 1921 Serial No. 283,481.

immaterial although the form shown herein is preferred. An intermediate casing or frame 10 which affords suitable guideways for the slides 7 connects the sets of cylinders and holds them in alinement.

An annular head 11 is provided for all the cylinders of each set and has intake ports 12 controlled by outwardly seating valves 13 which are projected by springs 14.- in compression each around the valve stem 15 between the head 11 in which the stem is reciprocable, and a stop collar 16 on the stem. Exhaust ports or assages 17 in the multiple head are contro led by outwardly seating valves 18 each normally projected by a spring 19 in compression around the valve stem 20 as a keeper between the head 11 and a stop collar 21, there being provision made for adjusting the stop collars of all the stems to insure necessary compression of the springs.

An annular housing 22 is suitably secured on the head 11 and incloses the intake valve stems. It also carries a set of intake valve operating arms 23 each pivoted at the outer end on the housing with a tappet 24 resting" on the companion intake valve stem 15 and a cam roller 25 held by the action of the spring 14 against a cam track 26 of a valve cam 27 mounted on the main shaft 2.

A set of exhaust valve rocker arms 28 is mounted in the housing, each rocker being pivoted between its ends on a pin 29 with the inner end portion carrying a cam roller 30 engaging a cam track 31 of the cam 27 and a tappet 32. on the outer end which extends outside of the housing, bearing against the stem 20 of the companion exhaust valve 18.

An intake manifold 33 forms a head for the housing 22 and carries a steady bearing 34 for the main shaft 2. Depending hollow arms 35 extend to'an annular intake duct 36 which rests on the cylinder head 11 and has discharge openings each'in register with the intake ports 12. The ducts 35 cooperate with lugs 37 of the head 33 as guides for the valve operating arms 23 and the rocker arms 28 which preferably are ra embrace the rocker arms 28 and seal the apertures in the housing through which the latter extend.

Each set of'cylinders is secured around and about a central spider which carries a main bearing 40 of the shaft, an inner plate 41 likewise providing for a thrust bearing 42 to hold the cam 4 in adjusted position.

posed cylinders, there being ten cylinders in each end. In describing the engine in detail I have referred to the part in section shown 1n Fig. 1, but parts in Fig. 2 which are similar to parts in Fig. 1 are designated by the same'reference characters with the exponent a added thereto. It will be apparent that with this construction a very compact arrangement is secured both extremely light and rigid. Also by means of the valve housing, the wearing parts are protected and readily lubricated. Also by the particular disposition of intake manifold and'intake ports with interposed valve gear certain advantages of construction are secured, all tending toward a very compact and efiicient construction.

What I claim as new and desire to secure by Letters Patent is:

1. In an internal combustion motor, a main shaft, cylinders disposed in a circle around the shaft in parallel relation thereto, pistons for the cylinders operatively e0n nected to the'main shaft to cause inter-rotation between the shaft and cylinders, a multiple head closing the cylinders and having intake and exhaust ports for the cylinders, closures controlling the ports, a housing mounted on the head, valve mechanism mounted on the housing and operatively'engaging cams on the shaft to operate the closures, and a multiple manifold mounted on the housing and provided with intake ducts extending through the housing to the respective intake ports of the head.

2. In an internal combustion motor, a main shaft, cylinders disposed in a circle around the shaft in parallel relation thereto, pistons for the cylinders operatively connected to the shaft to cause inter-rotation between the shaft and cylinders, a multiple head closing-the cylinders and having intake and exhaust ports for the cylinders, closures controlling the ports, a housing mounted on the head, valve mechanism mounted on the housing and operatively connected to the shaft to operate the closures, and a multiple manifold mounted on the housing and provided with intake ducts extending through the housing to the respective intake ports of the head, the manifold and housing cooperating as guiding means for the valve mechanism.

3. In an internal combustion motor, a main shaft, cylinders disposed around the shaft in parallel relation thereto, pistons for the cylinders operatively connected to the shaft to cause inter-rotation of the shaft and cylinders, a multiple head for the cylinders having intake and exhaust ports, a housing mounted on the head, valve mechanism mounted on the housing for controlling the ports, a cam on the shaft within the housing for operating the valve mechanism, and a manifold mounted on the housing with ducts leading through the housing to the intake ports.

4. In an internal combustion motor, a main shaft, a set of cylinders disposed. around the shaft in a circle in parallel relation thereto, pistons for the cylinders, a cam on the shaft operatively connected to the pistons for causing inter-rotation between the cylinders and shaft, a multiple head closing the cylinders and having intake and exhaust ports therefor, tappet valves for controlling the intake and exhaust ports, a housing mounted on the head, a cam on the shaft within the housing, oscillatory members on the housing operated by the cam for moving the tappet valves, an intake manifold mounted on the housing and provided with ducts leading to the intake ports of the head. and lugs on the housing cooperating with the manifold as guides for the valve operating members.

In an internal combustion motor, a main shaft, a driving cam thereon, a set of cylinders on each side of the 'am disposed in parallel relation to the shaft, a casing connecting the cylinders and housing the main cam, pistons for the cylinders. stems connecting corresponding pistons of the sets, operatively connected to the cam, a multiple head for each set of cylinders having intake and exhaust ports therefor, valves for the ports, a housing on each head, a cam on the main shaft within each housing, means mounted within each housing and driven by the attached cam for operating the valves, and a manifold mounted on the housing and provided with hollow arms that lead to the intake ports of the cylinders and cooperate with'the'housing to guide the valve operating mechanism.

6. In an internal combustion motor, a main shaft, a main cam secured thereon. a spider on each side of the cam in which the shaft is journaled. a set of cylinders on each spider disposed in parallel relation to the shaft, a casing connecting the cylinders and housing the cam, pistons for the cylinders, stems connecting the pistons of corresponding pairs of cylinders, a cam slide secured to each stem in sliding engagement with the casing and operative engagement with the main cam for causing interrotation of the cylinders and shafts, a multiple head on the outer end of each set of cylinders with intake and exhaust ports for the cylinders, tappet valves carried by the head and adapted to control the intake and exhaust ports, a housing secured on each head, a cam on the main shaft-within each housing, valve operating mechanism carried by the housing and driven by the adjacent cam to operate the valves, and a manifold closing each housing and having hollow arms extending through the housing to the head and forming ducts to the respective intake ports thereof.

7. In an internal combustion motor, a main shaft, a main cam secured thereon, a spider on each side of the cam in which the shaft is journaled, a set of cylinders on each spider disposed in parallel relation to the shaft, a casing connecting the cylinders and housing the cam, istons for the cylinders, stems connecting t e pistons of correspond ing pairs of cylinders, a cam slide secured to each stem in sliding engagement with the casing and operative engagement with the main cam for causing inter-rotation of the cylinders and shafts, a multiple head on the outer end of eachset of cylinders with intake and exhaust ports for the cylinders, tappet valves carried by the head and adapted to control the intake and exhaust ports, a housing secured on each head, a cam on the main shaft within each housing, valve operating mechanism carried by the housing and driven by the adjacent cam to operate the valves, a manifold closing each housin and having hollow arms extending throug the housing to the head and forming ducts to the respective intake ports thereof, and lugs on each housing having bearing faces in parallel relation to hearing faces on the manifold arms, which formguides for parts of the valve operating mechanism.

8. In an internal combustion motor, a main shaft, a set of' cylinders around the shaft in parallel relation thereto, a multiple head for the cylinders having an intake and an exhaust port for each cylinder, tappet valves carried by the head each controlling a port, a housing mounted on the head, a valve cam secured on the main shaft within the housing, a double faced cam finger for operating each intake valve pivoted on the housing and operated by one face of the cam, rock arms each pivoted in an aperture through the wall of the housing and oscillated by the other'face of the valve cam to operate a companion exhaust tappet valve, an intake duct parallel relation thereto, a multiple head for the cylinders having an intake and an exhaust port for each cylinder, tappet valves carried by the head each controlling a port, a housing mounted on the head, a valve cam secured on the main shaft within the housing, a cam finger for depressing each intake valve pivoted on the housing and operated by the cam, rock arms each pivoted in an aperture through the wall of the housing and oscillated by the valve cam to operate a companion exhaust tappet valve, a manifold closing the housing and having hollow arms extending to the head as intake ducts to the intake ports, and lugs on the housing each in parallel relation to a companion manifold arm forming therewith guideways for the cam fingers and rock arms.

10. In an internal combustion motor, a main shaft, a set of cylinders around the shaft in parallel relation thereto, a multiple head for the cylinders having anintake and an exhaust port for each cylinder, tappet valves carried by the head each controlling a port, a housing mounted on the head, a valve cam secured on the main shaft within the housing, a cam finger for depressing each intake valve pivoted on the housing and operated by the cam, rock arms each pivoted in an aperture through the wall of the housing and oscillated by the valve cam to operate a companion exhaust tappet valve, a manifold closing the housing and having hollow arms extending to the head as intake ducts to the intake ports, lugs on the housing each in parallel relation to a companion the housing, hollow arms connecting the manifold to the duct, intake ports leading from the duct to the cylinders, exhaust ports leading from said cylinders outwardly through said housing, valves for said ports, valve operating mechanism carried by the housing and cams on the shaft for actuating said valve operating mechanism.

12. In an internal combustion motor a main shaft, opposed cylinders parallel to the shaft, interconnected pistons for the opposed cylinders operatively connected to and movable in parallel relation with the shaft to cause interrotation between the shaft and cylinders, a housing closing the cylinders, an intake manifold closing said housing and providing a bearing for said shaft, an intake duct surrounding the shaft Within the housing, hollow arms connecting the manifold to the duct, intake ports leading from the duct to the cylinders, exhaust ports leading from said cylinders outwardly through said housing, valves for said ports, valve operating mechanism carried by the housing and cams on the shaft for actuating said valve operating mechanism.

In wltness whereof, I, hereunto subscribe my name this 1st day of March, A. D. 1919.

PETER W. MURPHY. 

